Improvement in water-indicator for steam-boilers



@than i AAL@ 'ADOLPHUS W. NEYNABER, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 84,298, dated November Q4, 1868.

IMPROVEMENT IN' WATER-INDICATORsFOR STEAM-BORDERS.

The Schedule referred to in these Letters Patentand making part of the same To all whom fit 'may concern Be it known that I, ADoLrHUs F. W. NEYXABER, of Phihulelphia, in the county of Philadelphia, in the State of Pennsylvania, have invented an Improvement in the Construction of Floats for Tater-Indicators for Steam-Boilers, to give alarm when the water in the boiler evaporates' to agiven line; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters ofretei'ence marked thereon.

The nature of my invention consists in providing a certain rod and pipes to the oats heretofore used in the construction of boiler-feeders and alarm-devices, for which Letters Patent, No. 65,418, were granted to me, June 4, 1867, by which said improvement the ejecting of any water through the alarm-Whistle is avoided.

Figure 1 represents the rod connected with a float, enclosed in a cylinder, forming the imlicato1"for low water, attached to a steam-boiler in the state when 'blowing the alarm-Whistle.

Figure 2 represents a perspective view of the indicator for low ivater.

. To en. ble others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A represents` a ioat, to which, on the lower part, is attached the rod B, connecting again with the stem of valve C, The upper part of the oat has a little rod or pipe to guide the float, `in the saine manner as the float is guided on the lower part by means of rod B.

I) represents the cylinder in which the float is enclosed.

E represents an iron casting, forming a bracket.

F represents a pipe composed of dierent straight 1nd T-pieces.

G represents the alarm-whistle.

H represents the gauge-cock.

I represents a stop-cock, for the passage of Water.

K represents a stop-cock for the passage of steam.

This oat differs from the one for boiler-feeders, patented June 4, 1867, in having the rod B attached to it,

and the valve-stem connected with rod B, instead of hay j,

ing the valve-stem attached to the top of the float.

The operation and use of the indicator are as follows, (See fig. 1:)

As long as the water stands above line c, Water extends into cylinder D, keeps the ioat A lifted, and, consequently, rod B presses the valve-stem to its seat. VAs the water evaporates to line e, the water in oylinderl) will descend, the float and valve-stem fall, and the steam will blow the whistle. The apparatus is now in position, as shown in tig. 1. As soon as the water in the boiler rises above line e, water will enter through stopcock I, will lift the float, and this movement will, by means of rod B, close valve O. This forms the indicator of low water.

Thus it will be seen that, by the application of rod B, bracket E, pipe F, and cock K, the ejection of any water through the Whistle is avoided, as the water in pipe F will be always in level with the Water in the boiler. It will be on a level in both at all times, whether it eX- tends up to the gauge-cock or not. The valve C will not become injured by the Water from the boiler. This forms the improvement which I have made in the construction of my indicator.

lVhat I claim as my invention, and desire to secure by Letters Patent, 'is- The construction and arrangement of rod B, bracket E, and pipe F, substantially in the manner described.

A.,F. W. NEYNABER. Witnesses:

A. WALTER, S. FRANCKS. 

